Enable ReCaptcha user validation

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Google ReCaptcha, a Captcha web service, is used to validate new users on your user registration page.

Get a ReCaptcha key

1. Navigate to www.google.com/recaptcha.
2. Click Get ReCaptcha.
3. Enter a label for the site.
4. Enter the domain(s).
5. If desired to receive alerts about the site, select the Get alerts about this site check box.
6. Enter the owners of the site in the Owners check box.
7. Click Register and follow the on-screen instructions to create an account, enabling the key on all domains.
8. Copy the site and secret keys to a different location.

Install and configure the ReCaptcha plugin

1. Mouse over Management.
2. Click Administration.
3. Navigate to Translations > Translatables > ReCaptcha Support. 
4. Click the Enabled check box.
   
5. Public key - Fill in the site key in the public key field from your ReCaptcha key page.
6. Private key - Fill in the secret key in the Private key field from your ReCaptcha key page.
7. ReCaptcha theme - Select a ReCaptcha theme in the drop-down list.
8. Click Save.
9. Select the ReCaptcha support check box.
10. Click Save on the Manage Plugins page.

Set up the User - Login and Create widget to user ReCaptcha

1. Navigate to the site home page (or profile page) to edit the site theme.
2. Mouse over Management.
3. Click Manage site theme.
4. Click Manage pages. 
5. Search for the User Registration page.
6. Click Edit Layout. 
7. Locate the User - Login and Create widget.
8. Click Configure on the widget.
9. In the Mode drop-down list, select Create User.
10. Select the Enable Captcha on create user check box.
11. (Select any other fields you wish to add to the user creation.)
12. Click Save on the widget configuration dialog box.
13. Click Save Page. When a new user registers in the community, he/she sees ReCaptcha on the registration form.